Traction control modulator
US5207488A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1992 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Apr 6, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/409
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle braking actuated traction control system is provided which includes a bored frame fluidly connected with a master cylinder and a wheel brake. A spring biased plunger with a sealing head slidably mounted within the bore isolates the bore from the master cylinder by axial movement of the plunger in a first direction. A piston operatively associated with the plunger is sealably slidably mounted within the bore for creating a variable control volume in the bore in fluid communication with the wheel brake. The piston is connected with the plunger via a spring which biases the plunger away from the piston. A nut is fixably connected with the piston and a drive screw threadably engaged with the piston is reversibly powered by an electric motor which is responsive to the signals given by a controller which is cognizant of a vehicle wheel condition. Upon the appropriate signal the drive screw will power the piston to a position to cause the plunger to isolate the wheel brake from the master cylinder and thereafter modulate the pressure within the wheel brake as commanded by the controller during a traction control cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.